Title:
ARMOR PARTS FOR WATCH
Document Type and Number:
Japanese Patent JPS5848693
Kind Code:
A
Abstract:
PURPOSE:To enhance the decorativeness and corrosion resistance of the titled parts by plating the surface of a copper alloy with Ni or an Ni alloy by electrodeposition, forming a gold or gold alloy layer on the plating, and carrying out diffusion under heating. CONSTITUTION:The surface of armor parts for a watch made of a copper alloy are coated with Ni or an Ni alloy by electrodeposition in 1-3mum thichness, and gold or gold alloy layers are formed on the coats by plating. Diffusion is then carried out under heating at about 200-500 deg.C to form diffused layers of gold at portions subjected to have striped such as streaking finish. Thus, armor parts for a watch with fine appearance and corrosion resistance can be obtd.
Inventors:
SUZUKI TERUO
Application Number:
JP14725881A
Publication Date:
March 22, 1983
Filing Date:
September 18, 1981
Export Citation:
Assignee:
SEIKO INSTR & ELECTRONICS
International Classes:
C25D7/00; G04B37/22; (IPC1-7): C25D7/00; G04B37/22
Attorney, Agent or Firm:
Top affairs